142782291 has 8 divisors (see below), whose sum is σ = 211529360. Its totient is φ = 95188176.

The previous prime is 142782281. The next prime is 142782313. The reversal of 142782291 is 192287241.

142782291 is a `hidden beast` number, since 1 + 427 + 8 + 229 + 1 = 666.

It is not a de Polignac number, because 142782291 - 2⁵ = 142782259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142782221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2644090 + ... + 2644143.

It is an arithmetic number, because the mean of its divisors is an integer number (26441170).

Almost surely, 2^142782291 is an apocalyptic number.

142782291 is a deficient number, since it is larger than the sum of its proper divisors (68747069).

142782291 is an equidigital number, since it uses as much as digits as its factorization.

142782291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288242 (or 5288236 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 142782291 is about 11949.1544052288. The cubic root of 142782291 is about 522.6666406810. Note that the first 4 decimals are identical.

The spelling of 142782291 in words is "one hundred forty-two million, seven hundred eighty-two thousand, two hundred ninety-one".